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methyl 4-methyl-1-oxo-2,3-dihydro-1H-indene-5-carboxylate; CAS No.: 943845-12-3; methyl 4-methyl-1-oxo-2,3-dihydro-1H-indene-5-carboxylate. PROPERTIES: methyl 4-methyl-1-oxo-2,3-dihydro-1H-indene-5-carboxylate appears as a colorless oil with molecular formula C11H9O3. It has a boiling point around 240-245 C and exhibits good solubility in common organic solvents. Proper storage requires a tightly sealed container at room temperature away from heat sources. Safety precautions include avoiding inhalation of vapors and using appropriate respiratory protection due to its potential to cause respiratory irritation. APPLICATIONS: This compound serves as a versatile intermediate in fragrance and flavor synthesis. Its unique indene structure provides a woody aromatic note that is valued in perfumery compositions as described in flavor and fragrance chemistry journals. In materials science, methyl 4-methyl-1-oxo-2,3-dihydro-1H-indene-5-carboxylate derivatives have found application in creating UV-absorbing coatings. According to polymer chemistry research, the carbonyl group and methoxy functionality provide excellent UV light absorption properties, protecting underlying materials from degradation.